Or it could just be that guys who watch a ton of TV are also more likely to be overweight or drink excessively, both of which hurt your sperm, Priskorn notes.

Your move: If you’re trying to become a dad, it doesn’t hurt to cut down on couch time. And when you do sit down to catch up on Narcos, take breaks between episodes to do something active—like these 5 Stretches You Should Do While You’re Watching TV.